{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"3c51e4242d03","name":"REAR SPROCKET STEEL ULTRALIGHT, PROX 07.RS62090R-51, SR990-51","sku":"SR990-51_S.PROX","brand":"Pro-X Racing","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":47.62,"formatted":"£47.62"},"summary":"PROX Steel Rear Sprockets. Quality hardened steel. ProX Racing Parts ultra-light steel rear sprockets are manufactured from premium quality QSTE 420 and 460 high strength steel, offering superior durability even under extreme riding conditions. These sprockets will last 2-3 times longer than aluminum sprockets made from T7075-T6. SKU SR990-51. 51 teeth.","attributes":[{"label":"General Product Group","value":"Chain & Sprockets"},{"label":"General Product Type","value":"Sprockets & Components (Rear)"},{"label":"Variant Id","value":"279486"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR990-51_5FS_2EPROX/78ed6721c52c495f.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR990-51_5FS_2EPROX/78ed6721c52c495f.jpg"],"description":"PROX Steel Rear Sprockets. Quality hardened steel. ProX Racing Parts ultra-light steel rear sprockets are manufactured from premium quality QSTE 420 and 460 high strength steel, offering superior durability even under extreme riding conditions. These sprockets will last 2-3 times longer than aluminum sprockets made from T7075-T6. SKU SR990-51. 51 teeth.","descriptionMarkdown":"### ProX Steel Ultralight Rear Sprocket\n\nExperience superior durability and performance with the ProX Steel Ultralight Rear Sprocket. Crafted from premium quality QSTE 420 and 460 high-strength steel, this sprocket is engineered to withstand the most demanding riding conditions.\n\nThis ultralight steel sprocket offers exceptional longevity, lasting 2-3 times longer than traditional aluminum sprockets made from T7075-T6 alloy. Its robust construction ensures reliable performance and extended service life for your motorcycle.\n\n#### Key Features:\n\n \n- Manufactured from premium QSTE 420 & 460 high-strength steel\n \n- Ultralight design for reduced unsprung weight\n \n- Exceptional durability for extreme riding conditions\n \n- 2-3 times longer lifespan compared to T7075-T6 aluminum sprockets\n \n- Hardened steel construction for maximum wear resistance","weightGrams":null,"fitments":[],"collections":[{"name":"Chain & Sprockets","url":"https://www.2brosparts.com/api/agent/collection/GB/chain-sprockets"},{"name":"Sprockets & Components (Rear)","url":"https://www.2brosparts.com/api/agent/collection/GB/sprockets-components-rear"}],"links":{"page":"https://www.2brosparts.com/products/rear-sprocket-steel-ultralight-prox-07rs62090r-51-sr990-51","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/3c51e4242d03:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/3c51e4242d03:1"}},"market":{"country":"GB","countryName":"United Kingdom","locale":"en-gb","currency":"GBP","exchangeRateFromGbp":1,"pricesIncludeUkVat":true,"checkoutTax":null,"delivery":[{"name":"Standard","description":"Orders £15.00–£59.99 · 2–4 business days","carrier":null,"estimatedDays":"2–4 business days","price":{"amount":4.99,"formatted":"£4.99"},"free":false,"minimumOrder":{"amount":0,"formatted":"£0.00","gbp":0},"weightGrams":null},{"name":"Standard","description":"Orders £60.00 and up · 2–4 business days","carrier":null,"estimatedDays":"2–4 business days","price":{"amount":0,"formatted":"£0.00"},"free":true,"minimumOrder":{"amount":60,"formatted":"£60.00","gbp":60},"weightGrams":null}],"storeUrl":"https://www.2brosparts.com"},"navigate":{"start":"https://www.2brosparts.com/api/agent","search":"https://www.2brosparts.com/api/agent/search/GB/{words+joined+with+plus}"},"howToBuy":{"summary":"Build a basket for the shopper and give them one checkout link. Every URL is a plain path (no query string) and a GET. Nothing is stored between calls.","checkoutLinkFormat":"https://www.2brosparts.com/api/agent/checkout/GB/{basketKey}:{quantity},{basketKey}:{quantity}","steps":["1. Find products: follow links in these responses, or fetch https://www.2brosparts.com/api/agent/search/GB/{words+joined+with+plus} (e.g. https://www.2brosparts.com/api/agent/search/GB/brake+pads). Every product has a basketKey.","2. Optional check: https://www.2brosparts.com/api/agent/basket/GB/{basketKey}:{quantity},{basketKey}:{quantity} returns stock, totals per delivery option and the checkout link.","3. Give the shopper the checkout link. Opening it fills their basket with exactly these items (replacing what was there) and opens checkout for United Kingdom. They pay on 2brosparts.com through Stripe."],"noFetchNeeded":"You can write the checkout link yourself from basketKeys and quantities; nothing has to be fetched first. Each product also has links.buyOneNow, a ready link for one unit.","stateless":"Nothing is saved on our side. The items part of the URL is the whole basket: to change it, write the link again with the new list.","itemsFormat":"basketKey:quantity pairs joined by commas, e.g. 04f24aad4d68:2,7c1e9a0b3f2d:1. Quantity defaults to 1. Up to 50 products, 100 each.","country":"GB is the shopper's delivery country. Swap it for theirs (US, DE, FR…) in any URL; currency, tax and delivery follow it.","tips":["Put everything the shopper wants in one link.","Optionally add your name as a last path segment on checkout links (…/checkout/GB/<items>/claude) so the sale is credited to you.","The checkout link is for the shopper's browser. Do not open it yourself.","Signed-in trade account holders see their trade prices at checkout."]}}